LG LWHD1500ER Service Manual

LG LWHD1500ER Manual

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  • LG LWHD1500ER | Service Manual - Page 1
    website http://www.lgappliances.com LG LG Room Air Conditioner SERVICE MANUAL MODELS: LWHD1500ER,LWHD1800R,L1804R CAUTION • BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. • ONLY FOR AUTHORIZED SERVICE PERSONNEL.
  • LG LWHD1500ER | Service Manual - Page 2
    Air Conditioner Service Manual TABLE OF CONTENTS Safety Precautions...3 Dimensions ...5 Outside dimensions...5 Product Specifications ...6 Installation ...7 Select the Best Location ...7 Installation Check ...7 How to Secure the Drain Pipe ...7 How to Install...8 Cabinet Installation...9 Operation
  • LG LWHD1500ER | Service Manual - Page 3
    . Be sure not to do. Be sure to follow the instruction. s Installation WARNING Do not use damaged power cord plugs, or a loose socket. Always use the power plug and socket with the ground terminal. • There is risk of fire or electric shock. • There is risk of electric shock. Service Manual 3
  • LG LWHD1500ER | Service Manual - Page 4
    (customer). • There is risk of fire, electric shock, explosion, or injury. Be cautious when unpacking and installing the product. Do not store or use flammable gas or combustibles near the air conditioner. • Sharp edges could cause injury. Be especially careful of the case edges and the fins on
  • LG LWHD1500ER | Service Manual - Page 5
    you to hazards that could cause harm to the air conditioner. NOTICE This symbol indicates special notes. Dimensions Outside Dimensions D W Cool Energy Saver F1 LOW 'F F2 MED F3 HIGH Fan Dry Timer TEMP MODE TIMER FAN SPEED POWER H Dimension W H D Model mm(inch) mm(inch) mm(inch
  • LG LWHD1500ER | Service Manual - Page 6
    FAN SPEEDS,FAN/COOLING/HEATING FAN MOTOR OPERATION CONTROL ROOM TEMP CONTROL AIR DIRECTION CONTROL CONSTRUCTION PROTECTOR COMPRESSOR FAN MOTOR POWER CORD DRAIN SYSTEM NET WEIGHT OUTSIDE DIMENSION (W X H X D) (lbs/kg) (inch) (mm) LWHD1500ER LWHD1800R L1804R 1 115V 60Hz 15,000 1380 12.0 10
  • LG LWHD1500ER | Service Manual - Page 7
    or Green and Yellow) is provided in the power cord. The green wire must be grounded. 2. Connect to a single-outlet 15A circuit. (or 20A circuit for Electric Heater Model) 3. To avoid vibration or noise, make sure the air conditioner is installed securely. 4 Avoid placing furniture or draperies in
  • LG LWHD1500ER | Service Manual - Page 8
    5 SCREW(TYPE A) (10mm(2/5")) 16 6 SCREW(TYPE B) D5.1mm(0.2")/16mm(0.63") 3 7 SCREW(TYPE C) D4.1mm(0.17")/16mm(0.63") 5 8 FOAM-STRIP 1 9 FOAM-PE (600mm x 25mm x 2mm) 1 10 WINDOW LOCKING BRACKET 1 11 FOAM-PE (920mm x 30mm x 2mm) 1 12 DRAIN PIPE 1 13 FRAME GUIDE 2 8 Room Air Conditioner
  • LG LWHD1500ER | Service Manual - Page 9
    a very slight tilt downward toward the outside. Installation Sill Bracket Carriage Bolt (M-Screw) Figure 2 Cabinet Track hole Support Bracket Carriage bolt and lock nut Figure 3 Support Bracket Lock nut Machine screw (Type D) and lock nut Outer edge of window sill Screw(Type B) Sill bracket Top
  • LG LWHD1500ER | Service Manual - Page 10
    . Lift the inlet grille and secure it with a screw (Type A) through the front grille. (See Fig. 11) Figure 10 12. Window installation of room air conditioner is now completed. Figure 11 Screw(Type C) Power Cord Screw (Type A) Foam-Strip Window locking bracket 10 Room Air Conditioner Figure 12
  • LG LWHD1500ER | Service Manual - Page 11
    Operation Operation Function of Controls • Designed for COOLING ONLY. • Powerful and quiet cooling. • Slide-in and slide-out chassis for the simple instal- lation and service. • Low air-intake, top cooled-air discharge. • Built-in adjustable Thermistor • Washable one-touch filter • Compact size •
  • LG LWHD1500ER | Service Manual - Page 12
    20,000 ohm resistor across the capacitor terminals. 13. Raise the control box upward completely. (See Figure 15) 14. Re-install the components by referring to the removal procedure, above. (Refer to the wiring diagram found on page 22 in this manual and on the control box.) TEMP MODE Cool COOL FAN
  • LG LWHD1500ER | Service Manual - Page 13
    fasten the air guide from the base pan. 14. Move the air guide backward, and pull out from the base pan.(Move the air giude lower carefully.) 15. Re-install the Figure 19) 7. Re-install by referring to the removal procedure. Disassembly Figure 16 Figure 17 Figure 18 Figure 19 Service Manual 13
  • LG LWHD1500ER | Service Manual - Page 14
    3. Re-install the components by referring to the removal procedure, above. Electrical Parts 7. Overload install one (such as a WATCO A-1) before venting the FreonTM. Leave the valve in place after servicing install the components by referring to the removal procedure, above. 14 Room Air Conditioner
  • LG LWHD1500ER | Service Manual - Page 15
    cord means the cord which has the same specification marked on the supply cord attached at the unit.) TEMP MODE CoolCOOL FAN Ene DRY SFavrgery INDOOR FAN HEAT DEFROST Drayn Timer DESIRED PRFEFUFS3EN2A1RASHAEMULYVITIRGOETRFAEDOWHGIRREYTR TIMER SPFAENED ˚C POWER Figure 24 Service Manual 15
  • LG LWHD1500ER | Service Manual - Page 16
    the motor from the air guide. (See Figure 25) 5. Remove the motor. 6. Re-install the components by , install one (such as a WATCO A-1) before venting the FreonTM. Leave the valve in place after servicing the install the components by referring to notes. (See Figure 27) 16 Room Air Conditioner
  • LG LWHD1500ER | Service Manual - Page 17
    replacing the refrigeration cycle, be sure to Discharge the refrigerant system using a FreonTM recovery System. If there is no valve to attach the recovery system, install one (such as a WATCO A-1) before venting the FreonTM. Leave the valve in place after servicing unit is operating correctly, use
  • LG LWHD1500ER | Service Manual - Page 18
    Tools to remove components, Service valve. CONDENSER (HIGH PRESSURE SIDE) COMPOUND GAUGE MANIFOLD GAUGE B A CAPILLARY TUBE SEE INSETS BELOW EVAPORATOR (LOW PRESSURE SIDE) COMPRESSOR A B EXTERNAL VACUUM PUMP Figure 28A-Pulling Vacuum 18 Room Air Conditioner LOW HI B A CHARGING CYLINDER
  • LG LWHD1500ER | Service Manual - Page 19
    Schematic Diagram Electronic Control Device Schematic Diagram Service Manual 19
  • LG LWHD1500ER | Service Manual - Page 20
    OLP WIRING DIAGRAM AC PCB ASSEMBLY 3854AR3563P 8 AIR FILTER ASSEMBLY LOCATION NO. DESCRIPTION 1 MOTOR ASSY 2 CAPACITOR 3 COMPRESSOR 4 OVERLOAD PROTECTOR 5 DC PCB ASSEMBLY 6 AC PCB ASSEMBLY 7 THERMISTOR 8 PLASMA FILTER ASSY Q'TY PER SET 1 1 1 1 1 1 1 1 S: Service Parts N: Non
  • LG LWHD1500ER | Service Manual - Page 21
    C01D Schematic Diagram CN-MOTOR CN-PWR ZNR01J R01J CN-4WAY C01J E03J E02J E01J J8 RY-4WAY RY-COMP ASSEMBLY:6871A20167 POWER TRANS FUSE E04J E05J SW03G POWER ZD01F 2. DISPLAY P.C.B. ASSEMBLY CN-AC/DC J05 SW06G TEMP UP C02L C02A BZ01E J24 J2ZD02F J23 J22 J21 Service Manual 21
  • LG LWHD1500ER | Service Manual - Page 22
    Troubleshooting Guide Troubleshooting Guide Piping System CONDENSER COIL FAN COOLED AIR COMPLETE LIQUID BOIL OFF POINT SUCTION LINE COOL LOW PRESSURE VAPOR ROOM AIR HEAT LOAD CONDENSER COILS VAPOR INLET HOT DISCHARGED AIR LIQUID PRESSURE DROP 22 Room Air Conditioner MOTOR OUTSIDE COOLING AIR
  • LG LWHD1500ER | Service Manual - Page 23
    Ineffective Cooling Check cold air circulation for smooth flow. Dirty indoor coil (Heat exchanger) Malfunction of fan Clogged of air filter. Obstruction at air outlet Correct above trouble Check outdoor coil (heat exchanger) & the fan operation. Check gas leakage. Repair gas leak. Replacement of
  • LG LWHD1500ER | Service Manual - Page 24
    Troubleshooting Guide Fails to Start Check of power source. Check of control switch setting. Compressor only fails to start. Drop of power voltage. Defect of compressor capacitor. Capacitor check. Replacement Improper thermostat setting. Loose terminal connection. Improper wiring. Check circuit
  • LG LWHD1500ER | Service Manual - Page 25
    Electrical Parts Troubleshooting Guide Troubleshooting Guide Possible Trouble 1 The unit does not operate. Is the Trans input power AC 115V? NO (208/230V for LWL1230WAL) ••CChheecckktthheeFFuussee.. ••CChheecckkththeewwiriirninggddiaiaggraramm. . YES Is the Trans output power NO about AC
  • LG LWHD1500ER | Service Manual - Page 26
    Troubleshooting Guide Possible Trouble 2 The compressor does not operate. Is setting Temp. set lower than Room NO Temp.-0.5°C? YES • Select the setting Temp. to lower Number. Is the voltage No.10 NO of IC01M 0V? YES • Check the RY-COMP. • Check the wiring Diagram. Is the voltage N0.9 of
  • LG LWHD1500ER | Service Manual - Page 27
    wiring diagram. Troubleshooting Guide • Replace IC01M. • Replace IC01M. Possible Trouble 5 The function of Energy Saver does not operate. Is the mode NO key pushed once more from cool mode? YES Is the voltage No.3 of NO CN-AC/DC of AC PCB Ass'y DC 5V? YES • Reference to OWNER'S MANUAL
  • LG LWHD1500ER | Service Manual - Page 28
    Troubleshooting Guide Possible Trouble 6 Remote controller does not operate. Is the voltage of Battery NO over 2.3V? YES Is the voltage No.10 NO of CN-AC/DC on DC PCB Ass'y DC 5V? YES Is the connection of NO CN-AC/DC OK? YES • Replace Receiver Ass'y. • Replace the battery. ••
  • LG LWHD1500ER | Service Manual - Page 29
    ElectrIc Parts Troubleshooting Guide Possible Trouble 1 The unit does not operate. Is the Trans input power AC 115V? NO (208/230V for LWL1230WAL) ••CChheecckktthheeFFuussee.. ••CChheecckkththeewwiriirninggddiaiaggraramm. . YES Is the Trans output power NO about AC 14V? YES Is the Trans
  • LG LWHD1500ER | Service Manual - Page 30
    the RY-COMP. • Check the wiring Diagram. YES • Replace IC01M. YES • Wait 3 Minutes. • Replace AC PCB Ass'y. Possible Trouble 3 The compressor always operate. Is the wire connection of NO RY-COMP OK? YES • Check the RY-COMP. • Connect LEAD Wire to RY-COMP again. 30 Room Air Conditioner
  • LG LWHD1500ER | Service Manual - Page 31
    the wiring diagram. Possible Trouble 5 Remote controller does not operate. Is the voltage of Battery NO over 2.3V? YES Is the voltage No.10 NO of CN-AC/DC on AC PCB Ass'y DC 5V? YES Is the connection of NO CN-AC/DC OK? YES • Replace Receiver Ass'y. Troubleshooting Guide • Replace
  • LG LWHD1500ER | Service Manual - Page 32
    Troubleshooting Guide Possible Trouble 6 It displays abnormally on DC PCB Ass'y. NO Are the IC01G and IC02G good? YES NO Is the connection of NO CN-AC/DC OK? YES Does IC03G NO operate normally on AC PCB Ass'y? YES • Replace the DC PCB Ass'y. • Replace IC01G, IC02G. • Connect
  • LG LWHD1500ER | Service Manual - Page 33
    at outlet. Correct if none. Check voltage to Control Box. If none, check power supply cord. Replace cord if circuit is open. Connect wire. Refer to wiring diagram for terminal identification. Repair or replace loose terminal. Test capacitor. Replace if not within ±10% of manufacturer's rating
  • LG LWHD1500ER | Service Manual - Page 34
    Compressor cycles on overload. Capacitor Wiring Refrigerating system Insufficient cooling or heat- Air filter ing Exhaust damper door Unit undersized Excessive noise Turbo or fan Copper tubing Check the TEMP control. If not at the lowest number, set TEMP control to this setting and restart
  • LG LWHD1500ER | Service Manual - Page 35
    135314 135312 130410 249950 268711-1 268711-2 W0CZZ 238310 COOL FAN DRY INDOOR FAN HEAT DEFROST DESIRED PREUSENARASAEUYVTIRTRFAEOGIRREYTR ESnCeaorvgoeyrl ˚C POWER TEMP POWER 137215 567480 554160 264110 550140 352115-1 552102 352115-2 352111 35211A 352113 Service Manual 35
  • LG LWHD1500ER | Service Manual - Page 36
    HORIZONTAL LOUVER, VERTICAL LOUVER, VERTICAL BRACE SHROUD FILTER ASSEMBLY, AIR CLEANER PANEL, CONTROL CONTROL BOX ASSEMBLY, SINGLE PWB(PCB) ASSEMBLY, MAIN(AC) ESCUTCHEON PWB(PCB) ASSEMBLY, MAIN(DC) THERMISTOR ASSEMBLY POWER CORD ASSEMBLY MOTOR ASSEMBLY, SINGLE VENTILATION DAMPER ORIFICE MOUNT, MOTOR
  • LG LWHD1500ER | Service Manual - Page 37
    GRILLE, INLET GUIDE LOUVER, HORIZONTAL LOUVER, VERTICAL LOUVER, VERTICAL BRACE SHROUD FILTER ASSEMBLY, AIR CLEANER PANEL, CONTROL CONTROL BOX ASSEMBLY, SINGLE PWB(PCB) ASSEMBLY, MAIN(AC) ESCUTCHEON PWB(PCB) ASSEMBLY, MAIN(DC) THERMISTOR ASSEMBLY POWER CORD ASSEMBLY MOTOR ASSEMBLY, SINGLE VENTILATION
  • LG LWHD1500ER | Service Manual - Page 38
    Memo 38 Room Air Conditioner
  • LG LWHD1500ER | Service Manual - Page 39
    P/No.: 3828A29003A January, 2006 Printed in China
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LG
Room
Air Conditioner
SERVICE MANUAL
LG
MODELS: LWHD1500ER,LWHD1800R,L1804R
CAUTION
• BEFORE SERVICING THE UNIT, READ THE SAFETY
PRECAUTIONS IN THIS MANUAL.
• ONLY FOR AUTHORIZED SERVICE PERSONNEL.